Module: SharedEnvExtension

Included in:
Stdenv, Superenv
Defined in:
extend/os/mac/extend/ENV/shared.rb,
extend/os/linux/extend/ENV/shared.rb,
extend/ENV/shared.rb

Overview

Homebrew extends Ruby’s ENV to make our code more readable. Implemented in SharedEnvExtension and either Superenv or Stdenv (depending on the build mode).

Instance Method Summary collapse

Instance Method Details

#append(keys, value, separator = " ") ⇒ void

This method returns an undefined value.

Parameters:



84
85
86
87
88
89
90
91
92
93
94
# File 'extend/ENV/shared.rb', line 84

def append(keys, value, separator = " ")
  value = value.to_s
  Array(keys).each do |key|
    old_value = self[key]
    self[key] = if old_value.blank?
      value
    else
      old_value + separator + value
    end
  end
end

#append_path(key, path) ⇒ void

This method returns an undefined value.

Parameters:



110
111
112
# File 'extend/ENV/shared.rb', line 110

def append_path(key, path)
  self[key] = PATH.new(self[key]).append(path)
end

#append_to_cccfg(value) ⇒ void

This method returns an undefined value.

Parameters:



79
80
81
# File 'extend/ENV/shared.rb', line 79

def append_to_cccfg(value)
  append("HOMEBREW_CCCFG", value, "")
end

#append_to_cflags(newflags) ⇒ void

This method returns an undefined value.

Parameters:



69
70
71
# File 'extend/ENV/shared.rb', line 69

def append_to_cflags(newflags)
  append(CC_FLAG_VARS, newflags)
end

#ccString?

Returns:



153
154
155
# File 'extend/ENV/shared.rb', line 153

def cc
  self["CC"]
end

#cflagsString?

Returns:



163
164
165
# File 'extend/ENV/shared.rb', line 163

def cflags
  self["CFLAGS"]
end

#compilerSymbol, String

Outputs the current compiler.

# Do something only for the system clang
if ENV.compiler == :clang
  # modify CFLAGS CXXFLAGS OBJCFLAGS OBJCXXFLAGS in one go:
  ENV.append_to_cflags "-I ./missing/includes"
end

Returns:



204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
# File 'extend/ENV/shared.rb', line 204

def compiler
  @compiler ||= if (cc = @cc)
    warn_about_non_apple_gcc(cc) if cc.match?(GNU_GCC_REGEXP)

    fetch_compiler(cc, "--cc")
  elsif (cc = homebrew_cc)
    warn_about_non_apple_gcc(cc) if cc.match?(GNU_GCC_REGEXP)

    compiler = fetch_compiler(cc, "HOMEBREW_CC")

    if @formula
      compilers = [compiler] + CompilerSelector.compilers
      compiler = CompilerSelector.select_for(@formula, compilers)
    end

    compiler
  elsif @formula
    CompilerSelector.select_for(@formula)
  else
    DevelopmentTools.default_compiler
  end
end

#cppflagsString?

Returns:



173
174
175
# File 'extend/ENV/shared.rb', line 173

def cppflags
  self["CPPFLAGS"]
end

#cxxString?

Returns:



158
159
160
# File 'extend/ENV/shared.rb', line 158

def cxx
  self["CXX"]
end

#cxxflagsString?

Returns:



168
169
170
# File 'extend/ENV/shared.rb', line 168

def cxxflags
  self["CXXFLAGS"]
end

#fcString?

Returns:



183
184
185
# File 'extend/ENV/shared.rb', line 183

def fc
  self["FC"]
end

#fcflagsString?

Returns:



193
194
195
# File 'extend/ENV/shared.rb', line 193

def fcflags
  self["FCFLAGS"]
end

#fflagsString?

Returns:



188
189
190
# File 'extend/ENV/shared.rb', line 188

def fflags
  self["FFLAGS"]
end

#fortranvoid

This method returns an undefined value.



243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
# File 'extend/ENV/shared.rb', line 243

def fortran
  # Ignore repeated calls to this function as it will misleadingly warn about
  # building with an alternative Fortran compiler without optimization flags,
  # despite it often being the Homebrew-provided one set up in the first call.
  return if @fortran_setup_done

  @fortran_setup_done = true

  flags = []

  if fc
    ohai "Building with an alternative Fortran compiler", "This is unsupported."
    self["F77"] ||= fc
  else
    if (gfortran = which("gfortran", (HOMEBREW_PREFIX/"bin").to_s))
      ohai "Using Homebrew-provided Fortran compiler"
    elsif (gfortran = which("gfortran", PATH.new(ORIGINAL_PATHS)))
      ohai "Using a Fortran compiler found at #{gfortran}"
    end
    if gfortran
      puts "This may be changed by setting the FC environment variable."
      self["FC"] = self["F77"] = gfortran
      flags = FC_FLAG_VARS
    end
  end

  flags.each { |key| self[key] = cflags }
  set_cpu_flags(flags)
end

#ldflagsString?

Returns:



178
179
180
# File 'extend/ENV/shared.rb', line 178

def ldflags
  self["LDFLAGS"]
end

#no_fixup_chains_support?Boolean

Returns:

  • (Boolean)


26
27
28
29
30
31
32
33
34
35
36
37
# File 'extend/os/mac/extend/ENV/shared.rb', line 26

def no_fixup_chains_support?
  return false if MacOS.version <= :catalina

  # NOTE: `-version_details` is supported in Xcode 10.2 at the earliest.
  ld_version_details = JSON.parse(Utils.safe_popen_read("/usr/bin/ld", "-version_details"))
  ld_version = Version.parse(ld_version_details["version"])

  # This is supported starting Xcode 13, which ships ld64-711.
  # https://developer.apple.com/documentation/xcode-release-notes/xcode-13-release-notes
  # https://en.wikipedia.org/wiki/Xcode#Xcode_11.0_-_14.x_(since_SwiftUI_framework)_2
  ld_version >= 711
end

#no_weak_imports_support?Boolean

Returns:

  • (Boolean)


16
17
18
19
20
21
22
23
# File 'extend/os/mac/extend/ENV/shared.rb', line 16

def no_weak_imports_support?
  return false if compiler != :clang

  return false if !MacOS::Xcode.version.null? && MacOS::Xcode.version < "8.0"
  return false if !MacOS::CLT.version.null? && MacOS::CLT.version < "8.0"

  true
end

#permit_arch_flagsvoid

This method returns an undefined value.



317
# File 'extend/ENV/shared.rb', line 317

def permit_arch_flags; end

#prepend(keys, value, separator = " ") ⇒ void

This method returns an undefined value.

Parameters:



97
98
99
100
101
102
103
104
105
106
107
# File 'extend/ENV/shared.rb', line 97

def prepend(keys, value, separator = " ")
  value = value.to_s
  Array(keys).each do |key|
    old_value = self[key]
    self[key] = if old_value.blank?
      value
    else
      value + separator + old_value
    end
  end
end

#prepend_create_path(key, path) ⇒ void

This method returns an undefined value.

Parameters:



129
130
131
132
133
# File 'extend/ENV/shared.rb', line 129

def prepend_create_path(key, path)
  path = Pathname(path)
  path.mkpath
  prepend_path key, path
end

#prepend_path(key, path) ⇒ void

This method returns an undefined value.

Prepends a directory to PATH. Is the formula struggling to find the pkgconfig file? Point it to it. This is done automatically for keg-only formulae.

ENV.prepend_path "PKG_CONFIG_PATH", "#{Formula["glib"].opt_lib}/pkgconfig"

Prepending a system path such as /usr/bin is a no-op so that requirements don’t accidentally override superenv shims or formulae’s bin directories.

ENV.prepend_path "PATH", which("emacs").dirname

Parameters:



122
123
124
125
126
# File 'extend/ENV/shared.rb', line 122

def prepend_path(key, path)
  return if %w[/usr/bin /bin /usr/sbin /sbin].include? path.to_s

  self[key] = PATH.new(self[key]).prepend(path)
end

#remove(keys, value) ⇒ void

This method returns an undefined value.

Parameters:



136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
# File 'extend/ENV/shared.rb', line 136

def remove(keys, value)
  return if value.nil?

  Array(keys).each do |key|
    old_value = self[key]
    next if old_value.nil?

    new_value = old_value.sub(value, "")
    if new_value.empty?
      delete(key)
    else
      self[key] = new_value
    end
  end
end

#remove_cc_etcHash{String => String}

Returns:



63
64
65
66
# File 'extend/ENV/shared.rb', line 63

def remove_cc_etc
  keys = %w[CC CXX OBJC OBJCXX LD CPP CFLAGS CXXFLAGS OBJCFLAGS OBJCXXFLAGS LDFLAGS CPPFLAGS]
  keys.to_h { |key| [key, delete(key)] }
end

#remove_from_cflags(val) ⇒ void

This method returns an undefined value.

Parameters:



74
75
76
# File 'extend/ENV/shared.rb', line 74

def remove_from_cflags(val)
  remove CC_FLAG_VARS, val
end